Sole pressing machine



5 Sheets-Sheet 1 R. RUHR SOLE PRESSING MACHINE Filed Nov. 25, '1929 May 23, 1933.

May 23, 1.933.. `n. RUHR l 1,910,858

' soLE PREssINQ )LACH-INE l Filed Nov. 25, 1929 3 Sheets-Sheet 2 @nue/liar;-

@hw/Ted@ May 23, 1933.

R. RUHR 1,910,858

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a. 94 l g1 l a I S33 Patented May 23, 1933 UNITED STATES PATENT OFFICE RICHARD EUHR, OF OFFENBAOH-ON-THE-MAIN, GERMANY, ASSIGNOR T0 THE FIRM MASCHINENFABRIK MOENUS A. G., OF FRANKFORT-ON-THE-MAIN, GERMANY SOLE PRESSING MAGHINE The present invention relates to a multiple sole pressing and cementing machine utilizing a pressure medium for infiating pressure chambers coacting with hold-downs for pressing the cemented soles to the lasted shoes. More particularly my invention relates to such a machine wherein an endless carrier supports a plurality of pressing devices.

An important feature of my invention resides in the arrangement of a continuously moving endless carrier.

A further important feature of my invention resides in the combination with the continuously moving endless carrier of automatic means for releasing the finished shoe.

Yet a further feature of the invention resides in means for controlling the speed or interrupting the movement of the endless carrier at will of the attendant.

The pressure pads do not act directly upon the sole. Moreover they act by means of intermediate semihard adapters.

These and other features of my invention will become apparent from the following description of the preferred embodiment illustrated in the accompanying drawings, in which Fig. 1 is a side elevation of a sole press con structed in accordance with the invention,

Fig. 2 is a vertical sectionon the line a-b of Fig. 1,

Fig. 3 is a vertical section on the line e--f l of Fig. 1, i

Fig. 4 is a vertical section through a part of a pressure chamber,

Figs. 5 and 5a show the cock-arrangement in a section on the line c-cl of Fig. 4 and an end-view respectively,

Figs. 6 and 7 show a perspective View and al crosslsection of an adapter for the shoes respectively. f

As all pressure devices are'alike it .will suffice to describe one of them only.4 The pressure chamber consists of the iron-container 1 closed by a rubber diaphragm 2 and a leather cover 3. To obtain an air-tight joint the diaphragm and the-'cover are pressed tothe rim of the container l by means of the iron strip 4 and the screw bolts 5. The bulk of the cover and the diaphragm lie -normally below the rim of the container so that no extreme stresses are produced at the joint when compressed air is introduced into the container. The container 1 has two depending legs 6 forming bearings for the bolts 7. On these bolts 7 are arranged on the outer side of the legs rotatable rollers 8 for the purpose described hereinafter. The inner ends of the bolts 7 of one container are connectedby links 9 with the lbolts of the neighbouring containers. The linked containers form thus an endless chain. It is of course possible to use instead a link-chain and `to attach thereto independent containers.

The outer ends ofthe bolts 7 engage into and are carried by sprocket wheels 10, l0 and 11, l11.

. Every container 1 is provided with a housing 12 of a two-way cock 13. A channel 14 of an arm 15 leads from the housing to a hose 16 which forms for itself an endless duct. One of the containers 1 has a further depending arm 17 forming a bearing for the kneemember 18, 18. Owing to its weight the member-part 18 hangs always down during the movement of the endless carrier. This member has a bore 19 leading at one end into a circular channel 20 of the ring 21. The ring 21 is connected by the hose 22 with the endless hose 16 so as to freely rotate on the part 18. The other end of the bore 19 is connected to the flexible duct 23 the lower end of which is fastened at the fixed point 24 to a duct leading to the pressure-source. It is thus evident that the pressure-medium propagates from its source or storage-tankthrough the duct 23, the member 18, 18 and the hose 22 into the endless hose 16 and from here through the cocks 13 into the pressure chambers formed by the containers 1 and their 4covers 2. lVh'en the cock is closed the entrance of the pressure-medium is shut-up and the compressed air can be discharged through the opening 108 from the chamberint-o the atmosphere. A two-armed lever 25 is fastened to the cock 13 so that it can be opened and closed by hand, but it is normally constantly 4open to the pressure-source and is onlytemporarily opened against the atmosrroo t"528 of.the container 1.

1m lold-down tends to keep the latter away from theshoe. But it can be pressed down by a treadle 33 pivoted at 34 to theV machine frame 35. By means of the treadle 33 the bar 36 and a slide 37 can be lifted. The vupper curved surface of the slide 37 cooperates with the roller 38 on the arm 39 of the hold down to move it against the shoe. To the container 1 is pivoted on either side at 41 a link 40 the upper end of which is adjustably connected to the hold-down 26 by the link 42. The adjustment is obtained by means of the screwspindle 43 and the nut 44. The spindle 43 has screw-threads of different directions and can be turned by means of the hand-wheel 45. By turning the spindle the link 42 and the nut 44 are moved relatively to each other to adjust the holddown to different sizes of shoes. As seen from the drawings the upper ends of the links 40 have slots 46 into which engage the pins 47 of the nut 44. In the raised position of the hold-down the pivot 48 of the link 42 lies to the right of the links 40. But if the hold-down is moved against the shoe the links 40 and the link 42 swing to the right until they occupy the position shown in dotted linesin Fig. 2 of the drawings. In this position the nut 44 abuts against the nose 49 of the hold-down and the pivot 48 is on the left of the links 40. Thus links 40 and theV link 42 form levers adapted to automatically lock the holddown in the operative position. The slots 46 of the links 40 permit the holddown to press against the shoe when actuated by the pedal 33. By turning of the handwheel 45 the nut 44 can be adjusted as to bring the pins 47 to the upper end of the slots whereupon the hold-down remains in the depressed position. This adjustment is made use of whenever a new size of shoes is to be operated upon. A spring 50 `provided. which tends to keep the links 40 on the right or on Ithe left of the pivot 48. The holddown 26 is seated on the shoe notl only with surface of the adapter has approximately the same dimensions as the cover 3 above the cavity of the container 1 so that the whole pressure of the medium filling the chamber is acting upon the sole to be cemented. The adapter 55 has along its underside a cavity 56 closed by a layer 57 of leather or the like. The effect of this cavity is that a sure pressure upon the margin of the sole especially at the joint is obtained. The rear part of the adapter is provided on both sides with flat springs 58 as shown in Figs. 4 and 5. They serve to keep the sole in the right position relatively to the lasted shoe so that the usual fastening of the sole to the shoe by two nails previous to the pressing may be dispensed with. The springs 58 center the sole at the rear while at the fore-part the sole is centered by the attendant intreducing the shoe with both hands into the machine. j

The sprocket wheel 10 is keyed to one end of the shaft 59. To the other end of the shaft 59 is keyed the toothed wheel 60. The shaft 59 is journalled in the hollow shaft 61 keyed to the arm 62 fixed by the sei-ew 63 to the machine frame. The hole 64 of the arm 62 is elongated as to allow the arm and the hollow shaft to swing for a small degree and to adjust the position of the arm 65 arranged on the right end of the hollow shaft 61. The upper end of the arm 65 has -an inclined surface 66 cooperating with the roller 67 on the two-armed lever 25 to open the cock 13 to the atmosphere and to discharge the pressure-medium from the pressure chamber whenever the latter after its whole travel passes over the arm 65. The fixed hollow shaft 61 is accommodated within the second hollow shaft 68. To the right end (see Fig. 2) of this shaft is fastened the sprocket wheel 10 and to its left hand end the toothed Wheel 69. The toothed wheels 60, 69 engage the toothed wheels 70, 71 keyed to the shaft 72 driven by means of the sprocket wheel 73. the chain 74, the spi-oei.'- et wheel 75, the shaft 76. the worm wheel 77. the Worm 78, and the clutch 79 by the electromotor 80. The clutch 79 is normally held in engagement by the spring 811 and can be disengaged at will by means of the knee lever 822, the bar 83, and the elbow lever 84. The speed of the motor 80 can be controlled by means of the hand wheel 81. The endless chain formed by the pressing devices and driven by the sprocket wheels 107 10 drives also the sprocket wheels 11, 11 fastened to the shaft 82. The rollers 8 of the pressing. devices ride underneath and over rails 833 in order to be properly guided and supported. The pressing device shown just above the shaft 59 in Fig. 1 is operated upon b v the attendant. Of the three pressing devices shown in Fig. 1 in full lines the uppermost is in easy reach of the operator.

The devices on both sides of the uppermost one assume an inclined position and allow an lintroduced into the middle pressing device the shoe shown on the left of it is automatically freed.` This is done by exhausting the pressure medium from the pressure chamber by opening the cock 13 to the atmosphere by means of the inclined surface 66 ad by pushing back of the link 42 by the inclined member 85 from the position shown in Fig. 2 iirdotted lines into the position shown in full lilies. The inclined member 85 is adjustably secured to the bars 86 held by the bars 87,- 88, fastened by means of nuts 89, 90 to the machine frame.

The endless carrier formed by' the interconnected pressing devices is with the exception of its left end enclosed in a housing 91 into which a draft of air is blown in through the openings 92, 93 so as to produce a whirl-wind within this casing. A partition wall 94 is arranged within the housing in order to distribute the air, which is preferably heated, over all shoes within the casing. By` these means the cemented shoes are dried. To accelef'ate the drying an electric heating device 95 is arranged in every container 1 of the pressing chambers. The electric ducts for these heating devices may be led along the hoses 16, 23. Morever the finished shoes removed from the pressing devices are placed with the soles uppermost on pins 109of an endless band 96 led through a channel 97 at the entrance of which are arranged electric heating wires 98. The endless band 96 runs over the disks 99, 100 moved by means of the chain 101, from the shaft 82.` The air is eX- liausted from the heating channel 97 through the pipe 102.

The shoes to be treated are fed to the working place by the endless band 103 in any appropriate manner. v

From the above the operation of the machine will be apparent. The attendant stands in front of the machine and introduces the shoe into the uppermost pressing device. He then depresses the treadle 33 for moving the hold-down, on to the shoe for a preparatory pressing of the cemented sole to the lastshoe. The hold-down' becomes locked automatically. He then turns the handle 25 so as to allow the pressure medium to enter the pressure chamber and to press the cover 2 against the shoe. This all is done while the endless carrier is moving. The shoe thus held in pressing position travels around the sprocket wheels l1, 11 until it returns to the starting point where the compressed air is automatically discharged vfrom the pressing chamber and the hold-down is unlocked. The cemented shoe is removed from the pressing device and placed upon the endless band 94. After passing the drying channel 97 the cemented shoe has set and can at once be subjected to the finishing operations.

Preferably the machine frame 35V carries also the pump 104 for producing compressed air which is stored in the tank 105. This tank is provided with a pressure gauge 107 in front of the place occupied by the operator so as to enable him to watch whether the necessary pressure of about three atmospheres is prevailing or not. The compressor 104 is driven by means of the belt 106 and appropriate'other means by the electromotor 80.

What I claim is:

1. In a sole pressing machine, an endless carrier, a plurality of air-pressure-cushions for the shoes on the carrier, hold-downs cooperating with the pressure cushions, two revoluble members supporting the. endless carrier, motor driven meansl for constantly moving the endless carrier, and means movable by the operator to press the hold-downs against the said cushions while the endless carrier is travelling. p

2. In a sole pressing machine, an endless carrier, -a plurality of air-pressure-cushions for the shoes, hold-downs cooperating with the pressure cushions, two revoluble members supporting the endless carrier, means for locking the hold-downs in pressing position; means for introducing compressed air into the cushions, and means operable bya treadle to give to the hold-downs a preliminary pressure before introducing the compressed a1r.

3. In a sole pressing machine, an endless carrier, a plurality of air-pressure-cushions for the shoes, hold-downs cooperating with the pressure cushions, two revoluble members supporting the endless carrier, togglelevers for locking the hold-downs in pressing position, abutments on either side of the dead position of the toggle-levers, and a spring tending to keep the said levers in contact with either of the abutments.

4. In a sole pressing machine, a plurality of pressure devices, an endless carrier for the pressure devices, two revoluble members supporting the endless carrier, each member consisting of two sprockets arranged on coaxial shafts, means for inflating the pressure devices with compressed air, and stationary means arranged between the said sprockets for automatically exhausting the compressed air from the single pressure devices as they complete their travel around the revoluble members.

5. In a sole pressing machine, pressure cushions, hold-downs coacting with .the cushions, adapters upon the cushions, and lingers on the adapters for positioning of the sole. l

6. In a sole pressing machine, an endless carrier, a plurality of air-pressure-cushions` for the shoes, hold-downs cooperating with the pressure cushions, two revoluble members supporting the endless carrier, a housing enclosing the machine on all sides with the exception Where theshoes are introduced and removed, a pipe for introducing heated air into the housing, and electrical heating means Within the air pressure-cushions.

7 In a sole pressing machine, a plurality of pressure devices and cooperating hold-downs7 a carrier for the pressure devices and hold-4 doWns, means for constantly moving the carrier, and means for automatically operating the pressure devices and hold-downs While the carrier is moving.

In testimony whereof I aflix my signature.

RICHARD BUI-IR. 

